About the Stones to Pounds Converter
A stone is a British unit of weight equal to 14 pounds, used in the UK and Ireland for body weight. People say they weigh eleven stone seven, meaning 11 stone and 7 pounds. Most other countries use kilograms or pounds alone, which makes conversion necessary when you read health advice, fill in a form or travel. This converter turns stone and pounds into total pounds and kilograms, or total pounds into stone and pounds. The stone is exactly 14 avoirdupois pounds, or about 6.35029 kilograms, so the results are precise.
Updated October 2026
How to use the Stones to Pounds Converter
- 1Choose stone and pounds to pounds, or pounds to stone and pounds.
- 2Enter the stone and the extra pounds, or the total pounds.
- 3Read the converted weight in the large result.
- 4Check the kilograms and stone as a decimal.
- 5Copy the result.
Quick reference
- 8 stone = 112 lb = 50.8 kg.
- 10 stone = 140 lb = 63.5 kg.
- 12 stone = 168 lb = 76.2 kg.
- 14 stone = 196 lb = 88.9 kg.
- 16 stone = 224 lb = 101.6 kg.
Reading UK body weights
When someone says they are twelve and a half stone, they usually mean 12 stone 7 pounds, since the half is of the stone's 14 pounds. Decimal stone is a different way of writing it: 12.5 stone is 12 stone 7 pounds. Use the stone as a decimal row in the results to see the exact decimal version.
If you follow a weight-loss programme, you may be asked to record your weight in stone and pounds one week and kilograms the next. Doing it by hand invites mistakes, especially when the pounds go past 14. A loss of 3 pounds from 11 stone 1 pound takes you to 10 stone 12, not 11 stone minus 2. The calculator handles the carrying for you, so you can type total pounds, such as 155, and see 11 stone 1 pound immediately.
Stone and pounds also appear in older books and documents, and in sports. Horse racing in the UK still uses stone and pounds for the weights jockeys carry, with handicaps set in pounds and shown as, say, 9 stone 7. Boxing weight classes in the UK were traditionally in stone and pounds too, such as 10 stone 7 pounds for light middleweight, which is 147 pounds or 66.7 kilograms.
Health tools and units
Online BMI and calorie tools often ask for kilograms or pounds only, so convert your weight before you enter it. If you track weight loss, pick one unit and keep it, since converting back and forth introduces rounding that can hide small changes. Weigh yourself at the same time of day, in similar clothing.
Related tools
The KG to Stone Converter starts from kilograms, the KG to LBS Converter handles kilograms and pounds, the BMI Calculator works out body mass index and the Ideal Weight Calculator gives a target range.
Features
- Stone and pounds to pounds and kg
- Pounds to stone and pounds
- Stone as a decimal
- Exact 14 lb per stone
- Handy for UK and Irish body weights
- Free and private
Frequently asked questions
How many pounds are in a stone?
14. So 11 stone is 154 pounds, and 11 stone 7 pounds is 161 pounds.
How do I convert stone to pounds?
Multiply the stone by 14 and add any extra pounds. For 11 st 7 lb: 11 × 14 = 154, plus 7 gives 161 lb.
How do I convert pounds to stone?
Divide the pounds by 14. The whole number is the stone and the remainder is the pounds. 161 lb ÷ 14 = 11 remainder 7, so 11 st 7 lb.
How many kg is a stone?
One stone is 6.35029 kg. So 11 st 7 lb (161 lb) is 73.03 kg, and 14 stone is 88.9 kg.
Why is the stone still used?
It is a long tradition in the UK and Ireland for body weight, and the National Health Service, doctors and weight loss groups often still use it, although many people also know their weight in kilograms.
Do any other countries use the stone?
Rarely. The US uses pounds only, so Americans say 161 pounds, and most other countries use kilograms. The stone is mostly a UK and Irish custom.